Add a more direct MySQL handler.

1 files changed, 353 insertions, 0 deletions

diff --git a/OpenSim/Data/MySQL/MySQLGenericHandler.cs b/OpenSim/Data/MySQL/MySQLGenericHandler.cs
new file mode 100644
index 0000000..4f84641
--- /dev/null
+++ b/OpenSim/Data/MySQL/MySQLGenericHandler.cs
@@ -0,0 +1,353 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Reflection;
+using log4net;
+using MySql.Data.MySqlClient;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+
+namespace OpenSim.Data.MySQL
+{
+//    public class MySQLGenericHandler<T> : MySqlFramework where T: class, new()
+    public class MySQLGenericHandler : MySqlFramework
+    {
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        protected virtual Assembly Assembly
+        {
+            get { return GetType().Assembly; }
+        }
+
+        public MySQLGenericHandler(MySqlTransaction trans) : base(trans)
+        {
+            CommonConstruct();
+        }
+
+        public MySQLGenericHandler(string connectionString) : base(connectionString)
+        {
+            CommonConstruct();
+        }
+
+        protected void CommonConstruct()
+        {
+            // We always use a new connection for any Migrations
+            using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+            {
+                dbcon.Open();
+            }
+        }
+/*
+        private void CheckColumnNames(IDataReader reader)
+        {
+            if (m_ColumnNames != null)
+                return;
+
+            List<string> columnNames = new List<string>();
+
+            DataTable schemaTable = reader.GetSchemaTable();
+            foreach (DataRow row in schemaTable.Rows)
+            {
+                if (row["ColumnName"] != null)
+                    columnNames.Add(row["ColumnName"].ToString());
+            }
+
+            m_ColumnNames = columnNames;
+        }
+*/
+/*
+        public virtual T[] Get(string table, string field, string key)
+        {
+            return Get(table, new string[] { field }, new string[] { key });
+        }
+
+        public virtual T[] Get(string table, string[] fields, string[] keys)
+        {
+            return Get(table, fields, keys, String.Empty);
+        }
+
+        public virtual T[] Get(string table, string[] fields, string[] keys, string options)
+        {
+            if (fields.Length != keys.Length)
+                return new T[0];
+
+            List<string> terms = new List<string>();
+
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
+                for (int i = 0 ; i < fields.Length ; i++)
+                {
+                    cmd.Parameters.AddWithValue(fields[i], keys[i]);
+                    terms.Add("`" + fields[i] + "` = ?" + fields[i]);
+                }
+
+                string where = String.Join(" and ", terms.ToArray());
+
+                string query = String.Format("select * from {0} where {1} {2}",
+                                             table, where, options);
+
+                cmd.CommandText = query;
+
+                return DoQuery(cmd);
+            }
+        }
+
+        protected T[] DoQuery(MySqlCommand cmd)
+        {
+            if (m_trans == null)
+            {
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+                    T[] ret = DoQueryWithConnection(cmd, dbcon);
+                    dbcon.Close();
+                    return ret;
+                }
+            }
+            else
+            {
+                return DoQueryWithTransaction(cmd, m_trans);
+            }
+        }
+
+        protected T[] DoQueryWithTransaction(MySqlCommand cmd, MySqlTransaction trans)
+        {
+            cmd.Transaction = trans;
+
+            return DoQueryWithConnection(cmd, trans.Connection);
+        }
+
+        protected T[] DoQueryWithConnection(MySqlCommand cmd, MySqlConnection dbcon)
+        {
+            List<T> result = new List<T>();
+
+            cmd.Connection = dbcon;
+
+            using (IDataReader reader = cmd.ExecuteReader())
+            {
+                if (reader == null)
+                    return new T[0];
+/*
+
+                CheckColumnNames(reader);
+
+                while (reader.Read())
+                {
+                    T row = new T();
+
+                    foreach (string name in m_Fields.Keys)
+                    {
+                        if (reader[name] is DBNull)
+                        {
+                            continue;
+                        }
+                        if (m_Fields[name].FieldType == typeof(bool))
+                        {
+                            int v = Convert.ToInt32(reader[name]);
+                            m_Fields[name].SetValue(row, v != 0 ? true : false);
+                        }
+                        else if (m_Fields[name].FieldType == typeof(UUID))
+                        {
+                            m_Fields[name].SetValue(row, DBGuid.FromDB(reader[name]));
+                        }
+                        else if (m_Fields[name].FieldType == typeof(int))
+                        {
+                            int v = Convert.ToInt32(reader[name]);
+                            m_Fields[name].SetValue(row, v);
+                        }
+                        else if (m_Fields[name].FieldType == typeof(uint))
+                        {
+                            uint v = Convert.ToUInt32(reader[name]);
+                            m_Fields[name].SetValue(row, v);
+                        }
+                        else
+                        {
+                            m_Fields[name].SetValue(row, reader[name]);
+                        }
+                    }
+
+                    if (m_DataField != null)
+                    {
+                        Dictionary<string, string> data =
+                            new Dictionary<string, string>();
+
+                        foreach (string col in m_ColumnNames)
+                        {
+                            data[col] = reader[col].ToString();
+                            if (data[col] == null)
+                                data[col] = String.Empty;
+                        }
+
+                        m_DataField.SetValue(row, data);
+                    }
+                    result.Add(row);
+                }
+*/
+/*
+            }
+            cmd.Connection = null;
+            return result.ToArray();
+        }
+
+        public virtual T[] Get(string table, string where)
+        {
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
+                string query = String.Format("select * from {0} where {1}",
+                                             table, where);
+
+                cmd.CommandText = query;
+
+                return DoQuery(cmd);
+            }
+        }
+*/
+        public virtual bool Delete(string table, string field, string key)
+        {
+            return Delete(table, new string[] { field }, new string[] { key });
+        }
+
+        public virtual bool Delete(string table, string[] fields, string[] keys)
+        {
+//            m_log.DebugFormat(
+//                "[MYSQL GENERIC TABLE HANDLER]: Delete(string[] fields, string[] keys) invoked with {0}:{1}",
+//                string.Join(",", fields), string.Join(",", keys));
+
+            if (fields.Length != keys.Length)
+                return false;
+
+            List<string> terms = new List<string>();
+
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
+                for (int i = 0 ; i < fields.Length ; i++)
+                {
+                    cmd.Parameters.AddWithValue(fields[i], keys[i]);
+                    terms.Add("`" + fields[i] + "` = ?" + fields[i]);
+                }
+
+                string where = String.Join(" and ", terms.ToArray());
+
+                string query = String.Format("delete from {0} where {1}", table, where);
+
+                cmd.CommandText = query;
+
+                return ExecuteNonQuery(cmd) > 0;
+            }
+        }
+
+        public long GetCount(string table, string field, string key)
+        {
+            return GetCount(table, new string[] { field }, new string[] { key });
+        }
+
+        public long GetCount(string table, string[] fields, string[] keys)
+        {
+            if (fields.Length != keys.Length)
+                return 0;
+
+            List<string> terms = new List<string>();
+
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
+                for (int i = 0; i < fields.Length; i++)
+                {
+                    cmd.Parameters.AddWithValue(fields[i], keys[i]);
+                    terms.Add("`" + fields[i] + "` = ?" + fields[i]);
+                }
+
+                string where = String.Join(" and ", terms.ToArray());
+
+                string query = String.Format("select count(*) from {0} where {1}",
+                                             table, where);
+
+                cmd.CommandText = query;
+
+                Object result = DoQueryScalar(cmd);
+
+                return Convert.ToInt64(result);
+            }
+        }
+
+        public long GetCount(string table, string where)
+        {
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
+                string query = String.Format("select count(*) from {0} where {1}",
+                                             table, where);
+
+                cmd.CommandText = query;
+
+                object result = DoQueryScalar(cmd);
+
+                return Convert.ToInt64(result);
+            }
+        }
+
+        public long GetCount(string table)
+        {
+            using (MySqlCommand cmd = new MySqlCommand())
+            {
+                string query = String.Format("select count(*) from {0}", table);
+
+                cmd.CommandText = query;
+
+                object result = DoQueryScalar(cmd);
+
+                return Convert.ToInt64(result);
+            }
+        }
+
+        public object DoQueryScalar(MySqlCommand cmd)
+        {
+            if (m_trans == null)
+            {
+                using (MySqlConnection dbcon = new MySqlConnection(m_connectionString))
+                {
+                    dbcon.Open();
+                    cmd.Connection = dbcon;
+
+                    Object ret = cmd.ExecuteScalar();
+                    cmd.Connection = null;
+                    dbcon.Close();
+                    return ret;
+                }
+            }
+            else
+            {
+                cmd.Connection = m_trans.Connection;
+                cmd.Transaction = m_trans;
+
+                return cmd.ExecuteScalar();
+            }
+        }
+    }
+}